Solvent-recovery apparatus for rubber-spreading machines



E. A. ABELES April 1, 1930.

SOLVENT RECOVERY APPARATUS FOR RUBBER SPREADING MACHINES Filed April 28, 1928 INVENTOR m W M ATTORNEY Patented Apr. 1, i

'1 OFFICE nnnns'r annn'r ABELES, ornnw zonx, NQY.

SOLVENT-RECOVERY APPARATUS FOR RUBBER-SPREADING MACHINES Application filed April 28,.

The object of the present invention is to provide an effective apparatus applicable to rubber and other plastic spreading machines for therecovery of solvent from rubber applied to fabrics. The invention will he-described with reference to the accompanyingdrawings, in whi'ChQ-fl Figure 1 is a perspective view an embodi- 'ment of the invention as applied to a rubber"- spreading machine, and Y j K Figlll eslA 'sa diagrammatic view showing 7 the static ground arrangement. v

Figure 2 is a longitudinalsection'of the same, omitting driving'elements of the ma- :ehine andthe frame. J

- In the drawings 1 indicates a powerdriven spreader roll, 2 a spreader blade, 3 adjusting screw members for raising and lowering the plate and 4 a supporting frame, the spreader roll being driven through a gear and pinion connection with shaft 6 having pulley 7, 7* for connection with driving belts. Disposed rearwardly of the spreader roll is a hollow cooling plate 8 which may cool in any suitable way as by the passage of water through pipe 9 into the interior of the plate at the top thereof. the water being withdrawn through pipe 10. At the right of cooling plate 8 is a roller 11 over which the fabric passes, the fabric entering a chamber 12, VVi'thin the chamber is a heating plate or a series of heating plates, three being, shown in the present instance, indicated at 13, 13 and 13. The plates are hollow and communicate with one another via the pipes 14 Steam may be passed into one of the plates, as for example plate 13, via pipe 15 and the steam with any. condensate may be withdrawn through pipe roller 11 it passes through the heating chamiszs." Serial No. 273,629;

ber, lyingupon or-adjacent the heating plates 13, 13 and13 thencevpas'si ng within the condensing chamber over. aroller 24 in said chamber and thencefromthe outlet of the condensing chamber to a take-up member.

Fabric'in passing under blade 3 has spread thereon a usual irubbercom'pound which lies adjacent the blade andis 'held ag'ainst lateral displacement by the subblades 2 the compoundb'e'in'gfin a soft plastiocondition containing, a considerable proportion of solvent. 1 Astheifabric passes overthe cold platev8, the

rubber compound just spreadfis" c ongealedin order to prevent prematureevaporationof the solvent. It will be'noted-t'hat the plate is upwardly inclined, the angle. being such as to' give ready visibility of'the fabric and enable continual inspection? thereof by the operator. i

As the the solvent is evaporated and the heavy fumes tend to pass downwardly, the inclination of the heating chamber assisting such movement so that the fumes are guided to the condenser which causes the solvent to revert to its fluid state.

As the solvent is collected within the congenser it may pass therefrom through pipe 2.

In the drawings and particularly Figure 1A, I have shown diagrammatically means for 1 removing static electricity from the spreading roller, from the top of the fabric as it leaves the spreading, roller and from the bottom surface of the fabric as it leaves the cooling plate. Such means comprises a plurality of rods 25, which rods may be hollow, each rod having connected thereto a plurality of closely spaced fingers 25* adapted to lie in contact with spreader roller in the one case and in contact with the top and bottom of the fabric sheet in the other cases. The said bars and fingers may be made of brass or other material havingready conductivity, and they may be grounded, as by wire 26, to a suitable member as for example cold water pipe 10. By such means the static generated by the frictional contact of the spreader plate and spreader and the spreading and cooling elements upon the cloth fabric passes over the heated plates is effectively removed and carried to a point away from the apparatus so that all danger of ignition of the vapors within chamber 12 is obviated.

Having described my invention what I claim and desire to secure by Letters Patent is as follows 1. In ap aratus of the character described, an upwar y inclined hollow cooling plate for receiving and aiding a sheet of 'fabric in flat condition, a eating chamber relatively long and narrow and downwardly inclined relativel to said cooling means, a guide roller interme iate the cooling plate and heating chamber, a condensing chamber communicating with the heating chamber at the discharge end of the latter and means for guiding the sheet of material from the heating alamber into and out of the condensing chama means for receiving and cooling a fabric sheet, means for thereafter heating the fabric sheet, comprising a hollow plate member, a chamber within which the heating means is disposed and adapted to confine vapors, means for condensing said vapors, said means being in communication with the fabric heating means, and sets of contatcing fingers disposed for contact with the surfaces of the fabric rior to its entry into said chamber and groun ing means for said fingers.

In testlmony whereof, I have signed my name to this s ecification.

ER EST ARENT ABELES.

2. In apparatus of the character described, 

